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Armature Resistance is the ohmic resistance of the copper winding wires plus the brush resistance in an electrical generator. Check FAQs
Ra=(Va-VtIa)-Rse
Ra - Armature Resistance?Va - Armature Voltage?Vt - Terminal Voltage?Ia - Armature Current?Rse - Series Field Resistance?

Armature Resistance of Series DC Generator using Terminal Voltage Example

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Here is how the Armature Resistance of Series DC Generator using Terminal Voltage equation looks like with Values.

Here is how the Armature Resistance of Series DC Generator using Terminal Voltage equation looks like with Units.

Here is how the Armature Resistance of Series DC Generator using Terminal Voltage equation looks like.

35.5909Edit=(275Edit-170Edit0.66Edit)-123.5Edit
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Armature Resistance of Series DC Generator using Terminal Voltage Solution

Follow our step by step solution on how to calculate Armature Resistance of Series DC Generator using Terminal Voltage?

FIRST Step Consider the formula
Ra=(Va-VtIa)-Rse
Next Step Substitute values of Variables
Ra=(275V-170V0.66A)-123.5Ω
Next Step Prepare to Evaluate
Ra=(275-1700.66)-123.5
Next Step Evaluate
Ra=35.5909090909091Ω
LAST Step Rounding Answer
Ra=35.5909Ω

Armature Resistance of Series DC Generator using Terminal Voltage Formula Elements

Variables
Armature Resistance
Armature Resistance is the ohmic resistance of the copper winding wires plus the brush resistance in an electrical generator.
Symbol: Ra
Measurement: Electric ResistanceUnit: Ω
Note: Value should be greater than 0.
Armature Voltage
Armature Voltage is defined as voltage developed at the terminals of the armature winding of an AC or DC machine during the generation of power.
Symbol: Va
Measurement: Electric PotentialUnit: V
Note: Value should be greater than 0.
Terminal Voltage
Terminal Voltage, electric pressure or electric tension is the difference in electric potential between two points in electrical machines.
Symbol: Vt
Measurement: Electric PotentialUnit: V
Note: Value should be greater than 0.
Armature Current
Armature Current is defined as the current developed in the armature of an electrical DC generator due to movement of rotor.
Symbol: Ia
Measurement: Electric CurrentUnit: A
Note: Value should be greater than 0.
Series Field Resistance
Series field resistance refers to the electrical resistance of the field winding in a series-wound DC motor or generator.
Symbol: Rse
Measurement: Electric ResistanceUnit: Ω
Note: Value should be greater than 0.

Other Formulas to find Armature Resistance

​Go Armature Resistance of Series DC Generator given Output Power
Ra=Pconv-PoutIa2

Other formulas in Resistance category

​Go Series Field Resistance of Series DC Generator using Terminal Voltage
Rse=(Va-VtIa)-Ra

How to Evaluate Armature Resistance of Series DC Generator using Terminal Voltage?

Armature Resistance of Series DC Generator using Terminal Voltage evaluator uses Armature Resistance = ((Armature Voltage-Terminal Voltage)/Armature Current)-Series Field Resistance to evaluate the Armature Resistance, The Armature Resistance of Series DC Generator using Terminal Voltage formula is defined as the resistance of the armature winding of the series DC generator. Armature Resistance is denoted by Ra symbol.

How to evaluate Armature Resistance of Series DC Generator using Terminal Voltage using this online evaluator? To use this online evaluator for Armature Resistance of Series DC Generator using Terminal Voltage, enter Armature Voltage (Va), Terminal Voltage (Vt), Armature Current (Ia) & Series Field Resistance (Rse) and hit the calculate button.

FAQs on Armature Resistance of Series DC Generator using Terminal Voltage

What is the formula to find Armature Resistance of Series DC Generator using Terminal Voltage?
The formula of Armature Resistance of Series DC Generator using Terminal Voltage is expressed as Armature Resistance = ((Armature Voltage-Terminal Voltage)/Armature Current)-Series Field Resistance. Here is an example- 35.59091 = ((275-170)/0.66)-123.5.
How to calculate Armature Resistance of Series DC Generator using Terminal Voltage?
With Armature Voltage (Va), Terminal Voltage (Vt), Armature Current (Ia) & Series Field Resistance (Rse) we can find Armature Resistance of Series DC Generator using Terminal Voltage using the formula - Armature Resistance = ((Armature Voltage-Terminal Voltage)/Armature Current)-Series Field Resistance.
What are the other ways to Calculate Armature Resistance?
Here are the different ways to Calculate Armature Resistance-
  • Armature Resistance=(Converted Power-Output Power)/(Armature Current^2)OpenImg
Can the Armature Resistance of Series DC Generator using Terminal Voltage be negative?
No, the Armature Resistance of Series DC Generator using Terminal Voltage, measured in Electric Resistance cannot be negative.
Which unit is used to measure Armature Resistance of Series DC Generator using Terminal Voltage?
Armature Resistance of Series DC Generator using Terminal Voltage is usually measured using the Ohm[Ω] for Electric Resistance. Megohm[Ω], Microhm[Ω], Volt per Ampere[Ω] are the few other units in which Armature Resistance of Series DC Generator using Terminal Voltage can be measured.
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